七瀬 陸 (CV.小野賢章)
type: MusicGroup
genre: anime
popularity: 29
followers: 5821
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5ed1955da841773fd940964486c82310b3ae56981f55f6c4e1051c23e2cb4c01
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/316486f1-043b-4310-84d9-45d63bade30f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/316486f1-043b-4310-84d9-45d63bade30f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/316486f1-043b-4310-84d9-45d63bade30f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5ed1955da841773fd940964486c82310b3ae56981f55f6c4e1051c23e2cb4c01","name":"七瀬 陸 (CV.小野賢章)","registered_at":"2026-06-11T15:29:58Z","symbol":"NIM0063848","token_address":"0x5b7096eab7886c1ef1b5fda670ef25476c01c918","type":"artist","uuid":"316486f1-043b-4310-84d9-45d63bade30f"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed1955da841773fd940964486c82310b3ae56981f55f6c4e1051c23e2cb4c01. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/316486f1-043b-4310-84d9-45d63bade30f.json and https://artists.proofprofile.net/proofs/artist/316486f1-043b-4310-84d9-45d63bade30f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x5ed1955da841773fd940964486c82310b3ae56981f55f6c4e1051c23e2cb4c01","name":"七瀬 陸 (CV.小野賢章)","registered_at":"2026-06-11T15:29:58Z","symbol":"NIM0063848","token_address":"0x5b7096eab7886c1ef1b5fda670ef25476c01c918","type":"artist","uuid":"316486f1-043b-4310-84d9-45d63bade30f"}
album: SEPTET for...
  type: MusicAlbum
  date published: 2018-07-09
album: SEPTET for...
  type: MusicAlbum
  date published: 2018-07-09
album: Wonderful Octave
  type: MusicAlbum
  date published: 2019-07-09
album: Wonderful Octave
  type: MusicAlbum
  date published: 2019-07-09
  track: Wonderful Octave - Riku ver.
    type: MusicRecording
    duration: PT3M33S
    duration ms: 213853
    explicit: false
    by artist: 七瀬 陸 (CV.小野賢章)
    in album: Wonderful Octave
      type: MusicAlbum
      date published: 2019-07-09
    genre: anime
    isrc code: JPI101900975
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T14:22:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x04ae02e9de771afd6a394da09a97ca46767f71b804f29f9b5b30f8c3538a6bcd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957863
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957863
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101900975
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T14:41:15Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae02e9de771afd6a394da09a97ca46767f71b804f29f9b5b30f8c3538a6bcd. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101900975.
      date published: 2026-07-13T14:41:15Z
    audio: Wonderful Octave - Riku ver.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.982
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.658
      additional property: Energy
        type: PropertyValue
        value: 0.958
      additional property: Speechiness
        type: PropertyValue
        value: 0.072
      additional property: Acousticness
        type: PropertyValue
        value: 0.014
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.079
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.706
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.492
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: IDOLiSH7 七瀬 陸 スペシャルメッセージ
  type: MusicAlbum
  date published: 2022-08-20
album: Take my rose
  type: MusicAlbum
  date published: 2024-01-27
album: Sunny day smile!
  type: MusicAlbum
  date published: 2024-07-09